JPH0748586B2 - Method for manufacturing multilayer printed wiring board - Google Patents
Method for manufacturing multilayer printed wiring boardInfo
- Publication number
- JPH0748586B2 JPH0748586B2 JP4132047A JP13204792A JPH0748586B2 JP H0748586 B2 JPH0748586 B2 JP H0748586B2 JP 4132047 A JP4132047 A JP 4132047A JP 13204792 A JP13204792 A JP 13204792A JP H0748586 B2 JPH0748586 B2 JP H0748586B2
- Authority
- JP
- Japan
- Prior art keywords
- epoxy resin
- printed wiring
- bisphenol
- wiring board
- multilayer printed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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- Manufacturing Of Printed Wiring (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、耐熱性、耐湿性、層間
結合力、マイグレーション性、含浸性等に優れた多層プ
リント配線板の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a multilayer printed wiring board which is excellent in heat resistance, moisture resistance, interlayer bond strength, migration property, impregnation property and the like.
【０００２】[0002]
【従来の技術】多層プリント配線板用エポキシ樹脂の硬
化剤には、従来よりアミン系のものとフェノール系のも
のとが利用されている。フェノール系はアミン系に比べ
て耐熱性、耐湿性に優れているが、層間結合力、含浸性
に劣る欠点がある。分子量が大きいフェノールノボラッ
ク樹脂を使用すると耐熱性、耐湿性に優れているが、層
間結合力、含浸性が著しく低下する一方、分子量が小さ
いと層間結合力、含浸性が向上するものの、耐熱性、耐
湿性が著しく低下する。従って、硬化剤として使用する
フェノールノボラック樹脂の分子量の調整によって、こ
の相反する特性を両立させることは大変困難であった。2. Description of the Related Art Conventionally, amine-based and phenol-based curing agents have been used as curing agents for epoxy resins for multilayer printed wiring boards. The phenol type is superior in heat resistance and moisture resistance to the amine type, but has a drawback that it is inferior in interlayer bonding force and impregnation property. When a phenol novolac resin with a large molecular weight is used, it has excellent heat resistance and moisture resistance, but the interlayer bond strength and impregnability are significantly reduced, while when the molecular weight is small, the interlayer bond strength and impregnability are improved, but heat resistance, Moisture resistance is significantly reduced. Therefore, it has been very difficult to satisfy these contradictory properties by adjusting the molecular weight of the phenol novolac resin used as the curing agent.
【０００３】また、従来は、ビスフェノールＡ型エポキ
シ樹脂とテトラブロムビスフェノールＡとを予め反応さ
せて得られる臭素化エポキシ樹脂を、主樹脂として使用
している。このため、テトラブロムビスフェノールＡの
含有量が多ければ高分子化し、臭素含有率が高くなって
難燃性が向上する反面、含浸性が低下する。逆に、テト
ラブロムビスフェノールＡの含有量が少なければ低分子
化し、含浸性がよくなるものの臭素含有率が低下して難
燃性に劣り、含浸性と難燃性の特性をバランスよく調整
することが困難であった。Further, conventionally, a brominated epoxy resin obtained by previously reacting a bisphenol A type epoxy resin with tetrabromobisphenol A has been used as a main resin. Therefore, when the content of tetrabromobisphenol A is high, the polymer is polymerized, and the bromine content is increased to improve the flame retardancy, but the impregnability is decreased. On the other hand, if the content of tetrabromobisphenol A is low, the molecular weight will be low and impregnation will be good, but the bromine content will be low and flame retardancy will be poor, and it is possible to adjust the characteristics of impregnation and flame retardance in a well-balanced manner. It was difficult.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、上記の欠点
を解消するためになされたもので、耐熱性、耐湿性、マ
イグレーション性、層間結合力、含浸性、難燃性に優れ
た特性バランスのよい、、しかもコストダウンにも寄与
する多層プリント配線板の製造方法を提供しようとする
ものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, and has a property balance excellent in heat resistance, moisture resistance, migration property, interlayer bond strength, impregnation property, and flame retardancy. An object of the present invention is to provide a method for manufacturing a multilayer printed wiring board, which has good quality and contributes to cost reduction.
【０００５】[0005]
【課題を解決するための手段】本発明者は、上記の目的
を達成しようと鋭意研究をすすめた結果、プリプレグ製
造時に特定樹脂成分を反応させることによって、上記目
的が達成できることを見いだし、本発明を完成したもの
である。As a result of intensive research aimed at achieving the above object, the present inventor found that the above object can be achieved by reacting a specific resin component during prepreg production. Is completed.
【０００６】即ち、本発明は、ガラス基材にエポキシ樹
脂組成物を含浸・乾燥させたプリプレグの複数枚、内層
板および銅箔を重ね合わせて一体に成形する多層プリン
ト配線板の製造方法において、エポキシ樹脂組成物が
（Ａ）ビスフェノールＡ型エポキシ樹脂、（Ｂ）ノボラ
ック型エポキシ樹脂、（Ｃ）テトラブロムビスフェノー
ルＡ及び（Ｄ）フェノールノボラック樹脂を必須成分と
して、樹脂成分全体［（Ａ）＋（Ｂ）＋（Ｃ）＋
（Ｄ）］に対して（Ｃ）のテトラブロムビスフェノール
Ａを25〜50重量％の割合で含有するとともに、エポキシ
樹脂ワニスをガラス基材に含浸・乾燥させる工程におい
て、（Ａ）ビスフェノールＡ型エポキシ樹脂及び（Ｂ）
ノボラック型エポキシ樹脂と、（Ｃ）テトラブロムビス
フェノールＡとを反応させることを特徴とする多層プリ
ント配線板の製造方法である。That is, the present invention relates to a method for producing a multilayer printed wiring board in which a plurality of prepregs obtained by impregnating and drying an epoxy resin composition on a glass base material, an inner layer board and a copper foil are laminated and integrally molded, The epoxy resin composition includes (A) bisphenol A type epoxy resin, (B) novolac type epoxy resin, (C) tetrabromobisphenol A and (D) phenol novolac resin as essential components, and the entire resin component [(A) + ( B) + (C) +
[C] Tetrabrom bisphenol A in a proportion of 25 to 50% by weight relative to (D)], and in the step of impregnating and drying the epoxy resin varnish on the glass substrate, (A) bisphenol A type epoxy Resin and (B)
A method for producing a multilayer printed wiring board, which comprises reacting a novolac type epoxy resin with (C) tetrabromobisphenol A.
【０００７】以下、本発明を詳細に説明する。The present invention will be described in detail below.
【０００８】本発明に用いるプリプレグは、エポキシ樹
脂ワニスを、基材に含浸・乾燥させる工程において樹脂
化反応をさせるものである。The prepreg used in the present invention causes a resinification reaction in the step of impregnating and drying a base material with an epoxy resin varnish.
【０００９】まず、エポキシ樹脂ワニスの成分である
（Ａ）ビスフェノールＡ型エポキシ樹脂としては、エポ
キシ当量が 170〜340 であればよく、特に制限はなく広
く使用することができる。そしてこれらのビスフェノー
ルＡ型エポキシ樹脂は、単独または 2種以上混合して使
用することができる。ビスフェノールＡ型エポキシ樹脂
のエポキシ当量は一般に 170以上であり、 340を超える
と含浸性が低下し好ましくない。First, the bisphenol A type epoxy resin (A), which is a component of the epoxy resin varnish, has an epoxy equivalent of 170 to 340 and is not particularly limited and can be widely used. These bisphenol A type epoxy resins can be used alone or in combination of two or more. The epoxy equivalent of the bisphenol A type epoxy resin is generally 170 or more, and if it exceeds 340, the impregnating property is deteriorated, which is not preferable.
【００１０】エポキシ樹脂ワニスの成分である（Ｂ）ノ
ボラック型エポキシ樹脂としては、フェノール型、クレ
ゾール型、ビスフェノールＡ型等のものが挙げられ、こ
れらは単独または 2種以上混合して使用することができ
る。The novolak type epoxy resin (B) which is a component of the epoxy resin varnish includes phenol type, cresol type, bisphenol A type and the like, and these may be used alone or in combination of two or more kinds. it can.
【００１１】また、エポキシ樹脂ワニスの成分である
（Ｃ）テトラブロムビスフェノールＡの配合量は樹脂成
分全体［（Ａ）＋（Ｂ）＋（Ｃ）＋（Ｄ）］に対して25
〜50重量％の割合で含有することが望ましい。テトラブ
ロムビスフェノールＡの配合割合が25重量％未満では、
十分な難燃性、層間結合力が得られず、また50重量％を
超えると耐熱性、耐湿性が低下し好ましくない。Further, the compounding amount of (C) tetrabromobisphenol A which is a component of the epoxy resin varnish is 25 with respect to the whole resin component [(A) + (B) + (C) + (D)].
It is desirable to contain it in a proportion of up to 50% by weight. If the blending ratio of tetrabromobisphenol A is less than 25% by weight,
Sufficient flame retardancy and interlayer bond strength cannot be obtained, and if it exceeds 50% by weight, heat resistance and moisture resistance are deteriorated, which is not preferable.
【００１２】さらに、エポキシ樹脂ワニスの成分である
（Ｄ）フェノールノボラック樹脂としては、フェノール
型、アルキル変性フェノール型、ビスフェノールＡ型等
のものが挙げられ、これらは単独または 2種以上混合し
て使用することができる。Examples of the (D) phenol novolac resin, which is a component of the epoxy resin varnish, include phenol type, alkyl-modified phenol type, and bisphenol A type, which are used alone or in combination of two or more. can do.
【００１３】本発明において用いるプリプレグは、以上
の各成分を予め反応させて樹脂組成物としたものをガラ
ス基材に塗布・含浸・乾燥させて得るものではなく、上
述した各成分を必須成分とするエポキシ樹脂ワニスを、
基材に含浸・乾燥させる工程の段階で、（Ａ）ビスフエ
ノールＡ型エポキシ樹脂及び（Ｂ）ノボラック型エポキ
シ樹脂と、（Ｃ）テトラブロムビスフェノールＡとを反
応させてプリプレグをつくり、これを積層するものであ
る。The prepreg used in the present invention is not obtained by coating, impregnating and drying a glass substrate with a resin composition obtained by preliminarily reacting each of the above components, and the above components as essential components. Epoxy resin varnish
At the stage of the step of impregnating and drying the base material, (A) bisphenol A type epoxy resin and (B) novolac type epoxy resin are reacted with (C) tetrabromobisphenol A to form a prepreg, which is laminated. To do.
【００１４】本発明に用いるガラス基材および銅箔はい
ずれも、通常多層プリント配線板に使用されるものであ
れば特に制限はなく、広く使用することができる。ガラ
ス基材としては、ガラス織布、ガラス不織布等が使用さ
れる。The glass substrate and the copper foil used in the present invention are not particularly limited as long as they are usually used for a multilayer printed wiring board, and can be widely used. As the glass substrate, glass woven cloth, glass non-woven cloth or the like is used.
【００１５】本発明の多層プリント配線板は、上述のよ
うにしてつくったプリプレグの複数枚と、このプリプレ
グを用いた内層板、銅箔を重ねて、常法により加熱加圧
一体に成形して製造することができる。The multilayer printed wiring board of the present invention is formed by stacking a plurality of prepregs prepared as described above, an inner layer board using the prepregs and a copper foil, and integrally molding them by heating and pressurizing by a conventional method. It can be manufactured.
【００１６】[0016]
【作用】本発明は、エポキシ樹脂ワニスを、ガラス基材
に含浸・乾燥させる工程で（Ａ）ビスフェノールＡ型エ
ポキシ樹脂及び（Ｂ）ノボラック型エポキシ樹脂と
（Ｃ）テトラブロムビスフェノールＡとを反応させてプ
リプレグをつくることを特徴としている。従来、積層用
の樹脂組成物は、エポキシ樹脂と 2価ビスフェノールＡ
トを反応釜中で反応させて高分子化した後、ガラス基材
に塗布・含浸・乾燥させてプリプレグを製造していた。
これに対して、本発明では反応前の低分子の各成分をそ
のまま塗布してガラスクロス等への含浸性を改善し、ま
たプリプレグ製造時に各成分の反応を進めることによ
り、エポキシ樹脂とテトラブロムビスフェノールＡと硬
化剤間での競争反応をコントロールして、マイグレーシ
ョン性、層間結合力を改善し、従来の特徴である耐熱
性、耐湿性も維持させた多層プリント配線板を製造する
ことができたものである。According to the present invention, (A) bisphenol A type epoxy resin and (B) novolac type epoxy resin are reacted with (C) tetrabromobisphenol A in a step of impregnating and drying an epoxy resin varnish on a glass substrate. It is characterized by making a prepreg. Conventionally, the resin composition for lamination is an epoxy resin and divalent bisphenol A.
The prepreg was manufactured by reacting the resin in a reaction vessel to polymerize it, and then coating, impregnating and drying the glass substrate.
On the other hand, in the present invention, each low-molecular component before the reaction is applied as it is to improve the impregnating property to the glass cloth and the like, and the reaction of each component is promoted during the production of the prepreg, thereby the epoxy resin and the tetrabromo By controlling the competitive reaction between bisphenol A and the curing agent, it was possible to manufacture a multi-layer printed wiring board that improved migration and interlayer bond strength and maintained the heat resistance and moisture resistance that were the conventional characteristics. It is a thing.
【００１７】[0017]
【実施例】次に本発明を実施例によって説明する。本発
明はこれらの実施例によって限定されるものではない。
以下の実施例および比較例において、「部」とは「重量
部」を意味する。EXAMPLES The present invention will now be described with reference to examples. The invention is not limited by these examples.
In the following Examples and Comparative Examples, "part" means "part by weight".
【００１８】実施例１ ビスフェノールＡ型エポキシ樹脂（エポキシ当量187 ）
173部、クレゾール型ノボラックエポキシ樹脂（エポキ
シ当量210 ，固形分70重量％）43部、テトラブロムビス
フェノールＡ97部、ビスフェノールＡ型ノボラック樹脂
（水酸基価118，固形分70重量％） 120部、2-エチル−4
-メチルイミダゾール 0.1部およびメチルセロソルブを
加えて樹脂固形分65重量％のエポキシ樹脂ワニスを調製
した。Example 1 Bisphenol A type epoxy resin (epoxy equivalent: 187)
173 parts, cresol type novolak epoxy resin (epoxy equivalent 210, solid content 70% by weight) 43 parts, tetrabromobisphenol A 97 parts, bisphenol A type novolac resin (hydroxyl value 118, solid content 70% by weight) 120 parts, 2-ethyl −4
-Epoxy resin varnish having a resin solid content of 65% by weight was prepared by adding 0.1 part of methylimidazole and methylcellosolve.
【００１９】実施例２ ビスフェノールＡ型エポキシ樹脂（エポキシ当量187 ）
150 部、ビスフェノールＡ型ノボラックエポキシ樹脂
（エポキシ当量203 ，固形分70重量％）62部、テトラブ
ロムビスフェノールＡ100 部、ビスフェノールＡ型ノボ
ラック樹脂108 部、2-エチル−4-メチルイミダゾール
0.1部およびメチルセロソルブを加えて樹脂固形分65重
量％のエポキシ樹脂ワニスを調製した。Example 2 Bisphenol A type epoxy resin (epoxy equivalent: 187)
150 parts, bisphenol A type novolac epoxy resin (epoxy equivalent 203, solid content 70% by weight) 62 parts, tetrabromobisphenol A 100 parts, bisphenol A type novolac resin 108 parts, 2-ethyl-4-methylimidazole
0.1 part and methyl cellosolve were added to prepare an epoxy resin varnish having a resin solid content of 65% by weight.
【００２０】実施例１〜２で調製したエポキシ樹脂ワニ
スを、エポキシシランで表面処理した厚さ 0.18mm のガ
ラス基材に含浸・塗布し、160 ℃の温度で乾燥してエポ
キシ樹脂とテトラブロムビスフェノールＡとを反応さ
せ、樹脂分43重量％のプリプレグ（Ａ）を得た。同様に
してこのワニスを用いて厚さ0.10mmのガラス基材に含浸
・塗布したプリプレグ（Ｂ）を得た。このプリプレグ
（Ａ）を5 枚重ね合わせ、その両側に厚さ70μm の銅箔
を重ね合わせ加熱加圧一体に成形して回路形成および黒
化処理を行い、内層板を得た。内層板、プリプレグ
（Ｂ）および銅箔を重ねて加熱加圧一体に成形し、多層
プリント配線板を製造した。The epoxy resin varnishes prepared in Examples 1 and 2 were impregnated and applied on a glass substrate having a thickness of 0.18 mm, which had been surface-treated with epoxysilane, and dried at a temperature of 160 ° C. to obtain an epoxy resin and tetrabromobisphenol. A was reacted with A to obtain a prepreg (A) having a resin content of 43% by weight. In the same manner, using this varnish, a prepreg (B) was obtained by impregnating and coating a glass substrate having a thickness of 0.10 mm. Five sheets of this prepreg (A) were superposed on each other, copper foil having a thickness of 70 μm was superposed on both sides of the prepreg (A) and integrally molded by heating and pressurization to perform circuit formation and blackening treatment to obtain an inner layer board. The inner layer board, the prepreg (B) and the copper foil were overlaid and integrally molded under heating and pressure to manufacture a multilayer printed wiring board.
【００２１】比較例１ 臭素化エポキシ樹脂（エポキシ当量490 ，臭素含有率2
1.5％，固形分75重量％）340 部、ビスフェノールＡ型
ノボラックエポキシ樹脂62部、ビスフェノールＡ型ノボ
ラック樹脂108 部、2-エチル−4-メチルイミダゾール
0.1部およびメチルセロソルブを加えて樹脂固形分65重
量％エポキシ樹脂ワニスを調製した。Comparative Example 1 Brominated epoxy resin (epoxy equivalent 490, bromine content 2
1.5%, solid content 75% by weight) 340 parts, bisphenol A type novolac epoxy resin 62 parts, bisphenol A type novolac resin 108 parts, 2-ethyl-4-methylimidazole
An epoxy resin varnish having a resin solid content of 65% by weight was prepared by adding 0.1 part and methyl cellosolve.
【００２２】比較例２ 臭素化エポキシ樹脂 340部、ビスフェノールＡ型ノボラ
ックエポキシ樹脂62部、ジシアンジアミド 7.7部、2-エ
チル−4-メチルイミダゾール 0.1部およびジメチルホル
ムアミドを加え、樹脂固形分65重量％のエポキシ樹脂ワ
ニスを調製した。Comparative Example 2 340 parts of brominated epoxy resin, 62 parts of bisphenol A type novolac epoxy resin, 7.7 parts of dicyandiamide, 0.1 part of 2-ethyl-4-methylimidazole and dimethylformamide were added, and an epoxy resin having a solid content of 65% by weight was added. A resin varnish was prepared.
【００２３】比較例１〜２で得たエポキシ樹脂ワニスを
用いてプリプレグをつくり、実施例１〜２と同様にして
内層板を得て、次いで同様にして多層プリント配線板を
製造した。Using the epoxy resin varnishes obtained in Comparative Examples 1 and 2, prepregs were prepared, inner layer boards were obtained in the same manner as in Examples 1 and 2, and then multilayer printed wiring boards were manufactured in the same manner.
【００２４】実施例１〜２および比較例１〜２で製造し
たプリプレグ、多層プリント配線板を用いて、プリプレ
グの外観、難燃性、引剥がし強さ、層間結合力、半田耐
熱性、耐ミーズリング性を試験したので、その結果を表
１に示した。これらの試験は、次のようにして行った。Using the prepregs and multilayer printed wiring boards produced in Examples 1 and 2 and Comparative Examples 1 and 2, the appearance of prepregs, flame retardancy, peel strength, interlayer bond strength, solder heat resistance, and resistance to maze. The ringability was tested, and the results are shown in Table 1. These tests were conducted as follows.
【００２５】難燃性はＵＬ−９４に基づいて試験した。
引剥がし強さは、18μm の銅箔を用いてＪＩＳ−Ｃ−６
４８１に準拠して試験した。層間結合力は、幅1cm に切
断後、プリプレグ間の接着強度をＪＩＳ−Ｃ−６４８１
に準拠して試験した。半田耐熱性は、260 ℃の半田浴上
に表１に示した各時間浮かべ、フクレの有無を試験し
た。耐ミーズリング性の試験は、 120℃， 2気圧の水蒸
気中で表１に示した各時間処理した後、260 ℃の半田浴
中に30秒間浸漬し、フクレの有無を試験した。本発明の
多層プリント配線板は、いずれの特性についても優れて
おり、本発明の効果を確認することができた。Flame retardancy was tested according to UL-94.
Peel strength is JIS-C-6 using 18μm copper foil.
Tested according to 481. The interlaminar bond strength is determined by measuring the adhesive strength between prepregs after being cut to a width of 1 cm according to JIS-C-6481.
Tested in accordance with. The solder heat resistance was tested by floating on a solder bath at 260 ° C. for each time shown in Table 1 for the presence or absence of blisters. The measling resistance test was carried out by treating each in steam at 120 ° C. and 2 atm for each time shown in Table 1 and then immersing in a solder bath at 260 ° C. for 30 seconds to test for the presence of blisters. The multilayer printed wiring board of the present invention was excellent in all properties, and the effects of the present invention could be confirmed.
【００２６】[0026]
【表１】 [Table 1]
【００２７】[0027]
【発明の効果】以上の説明および表１から明らかなよう
に、本発明の多層プリント配線板は、耐熱性、耐湿性、
層間結合力、マイグレーション性、難燃性、含浸性に優
れた特性バランスがよいもので、コストダウンにも寄与
でき、信頼性の高いものである。As is clear from the above description and Table 1, the multilayer printed wiring board of the present invention has heat resistance, moisture resistance,
It has excellent inter-layer bonding strength, migration property, flame retardancy, impregnation property and good property balance, can contribute to cost reduction, and is highly reliable.
Claims (1)
・乾燥させたプリプレグの複数枚、内層板および銅箔を
重ね合わせて一体に成形する多層プリント配線板の製造
方法において、エポキシ樹脂組成物が （Ａ）ビスフェノールＡ型エポキシ樹脂、 （Ｂ）ノボラック型エポキシ樹脂、 （Ｃ）テトラブロムビスフェノールＡ及び （Ｄ）フェノールノボラック樹脂 を必須成分として、樹脂成分全体［（Ａ）＋（Ｂ）＋
（Ｃ）＋（Ｄ）］に対して（Ｃ）のテトラブロムビスフ
ェノールＡを25〜50重量％の割合で含有するとともに、
エポキシ樹脂ワニスをガラス基材に含浸・乾燥させる工
程において、（Ａ）ビスフェノールＡ型エポキシ樹脂及
び（Ｂ）ノボラック型エポキシ樹脂と、（Ｃ）テトラブ
ロムビスフェノールＡとを反応させることを特徴とする
多層プリント配線板の製造方法。1. A method for producing a multilayer printed wiring board, which comprises integrally molding a plurality of prepregs obtained by impregnating and drying a glass substrate with an epoxy resin composition, an inner layer board and a copper foil, and integrally molding the epoxy resin composition. (A) bisphenol A type epoxy resin, (B) novolac type epoxy resin, (C) tetrabromobisphenol A and (D) phenol novolac resin as essential components, and the entire resin component [(A) + (B) +
(C) + (D)], containing 25 to 50% by weight of tetrabromobisphenol A of (C),
In the step of impregnating and drying a glass substrate with an epoxy resin varnish, (A) bisphenol A type epoxy resin and (B) novolac type epoxy resin are reacted with (C) tetrabromobisphenol A Manufacturing method of printed wiring board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4132047A JPH0748586B2 (en) | 1992-04-24 | 1992-04-24 | Method for manufacturing multilayer printed wiring board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4132047A JPH0748586B2 (en) | 1992-04-24 | 1992-04-24 | Method for manufacturing multilayer printed wiring board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05304360A JPH05304360A (en) | 1993-11-16 |
| JPH0748586B2 true JPH0748586B2 (en) | 1995-05-24 |
Family
ID=15072282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4132047A Expired - Lifetime JPH0748586B2 (en) | 1992-04-24 | 1992-04-24 | Method for manufacturing multilayer printed wiring board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0748586B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8470938B2 (en) | 2003-06-03 | 2013-06-25 | Matsushita Electric Works, Ltd. | Resin composition for printed wiring board, prepreg, and laminate obtained with the same |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6253342A (en) * | 1985-09-03 | 1987-03-09 | Mitsubishi Gas Chem Co Inc | Production of epoxy resin laminate sheet |
| JPS62167044A (en) * | 1986-01-20 | 1987-07-23 | 東芝ケミカル株式会社 | Copper lined laminated board |
| JPH0252928A (en) * | 1988-08-15 | 1990-02-22 | Paloma Ind Ltd | Safety device for gas combustion equipment |
| JPH0369372A (en) * | 1989-08-09 | 1991-03-25 | Alps Electric Co Ltd | Production of wire dot head |
| JP2898809B2 (en) * | 1991-12-13 | 1999-06-02 | 住友ベークライト株式会社 | Manufacturing method of laminated board |
| US5320762A (en) * | 1993-03-12 | 1994-06-14 | Chevron Research And Technology Company | Low viscosity Group II metal overbased sulfurized C12 to C22 alkylphenate compositions |
-
1992
- 1992-04-24 JP JP4132047A patent/JPH0748586B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05304360A (en) | 1993-11-16 |
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